| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Sequential Mechanical Alloying of AlNbTaTiV Particles: Phase Formation and Microstructural Evaluation |
| Author(s) |
Marvin Tolentino, Aisa Grace Custodio, Gobinda Saha, Clodualdo Aranas |
| On-Site Speaker (Planned) |
Marvin Tolentino |
| Abstract Scope |
This study focuses on developing AlNbTaTiV refractory high-entropy particles via sequential mechanical alloying, leveraging the promising high-temperature properties of refractory high-entropy alloys (RHEAs). The presence of Al enhances ductility and reduces density while stabilizing the body-centered cubic (BCC) phase, as evidenced by X-ray diffraction data. Changes in microstructure and chemical composition were investigated by sequentially incorporating Ti and V into the AlNbTa ternary system. Observations revealed that severe shear deformation from mechanical alloying led to random welding orientations, dominating the formation of AlNbTaTiV particles. Particle size analysis indicated fracturing and cold-welding during alloying, corroborated by scanning electron micrographs. Energy-dispersive X-ray analysis provided insights into the chemical compositions throughout the alloying process, explained by the physicochemical properties of the constituent elements. Thermodynamic calculations supported the characterization and analysis results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials, Powder Materials |